When Salt Meddles Between Plant, Soil, and Microorganisms

Otlewska, Anna; Migliore, Melania; Dybka-Stępień, Katarzyna; Manfredini, Andrea; Struszczyk‐Świta, Katarzyna; Napoli, Rosario; Białkowska, Aneta; Canfora, Loredana; Pinzari, Flavia

doi:10.3389/fpls.2020.553087

Cited by 110 publications

(95 citation statements)

References 223 publications

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“…Due to high osmotic pressures as well as harmful ions and imbalance in nutrition [141], salinity causes suboptimal plant development and reduces activity of soil microbes. This is attributed to the fact that salinity changes water relation of plant tissues, nutrition and ion imbalance, and toxicity owing to the accumulation of Cland Na + ion levels in the plant tissues and soil [142][143][144][145]. The salt content in soil (salinity) can influence soil processes, and defines the osmotic pressure, and the sodium content in the soil's exchange complex (sodicity), which further regulates systemic stability of the soil [146].…”

Section: Salinitymentioning

confidence: 99%

Effects of Abiotic Stress on Soil Microbiome

Rahman

Hamid

Nadarajah

2021

IJMS

117

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Rhizospheric organisms have a unique manner of existence since many factors can influence the shape of the microbiome. As we all know, harnessing the interaction between soil microbes and plants is critical for sustainable agriculture and ecosystems. We can achieve sustainable agricultural practice by incorporating plant-microbiome interaction as a positive technology. The contribution of this interaction has piqued the interest of experts, who plan to do more research using beneficial microorganism in order to accomplish this vision. Plants engage in a wide range of interrelationship with soil microorganism, spanning the entire spectrum of ecological potential which can be mutualistic, commensal, neutral, exploitative, or competitive. Mutualistic microorganism found in plant-associated microbial communities assist their host in a number of ways. Many studies have demonstrated that the soil microbiome may provide significant advantages to the host plant. However, various soil conditions (pH, temperature, oxygen, physics-chemistry and moisture), soil environments (drought, submergence, metal toxicity and salinity), plant types/genotype, and agricultural practices may result in distinct microbial composition and characteristics, as well as its mechanism to promote plant development and defence against all these stressors. In this paper, we provide an in-depth overview of how the above factors are able to affect the soil microbial structure and communities and change above and below ground interactions. Future prospects will also be discussed.

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Section: Salinitymentioning

confidence: 99%

Effects of Abiotic Stress on Soil Microbiome

Rahman

Hamid

Nadarajah

2021

IJMS

117

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“…Among the various threats to soil functions, soil salinization is one of the most devastating factors that cause the deterioration of arable land (Ilangumaran and Smith 2017; Otlewska et al . 2020). It has been estimated that salinity has affected more than 20% of the total agricultural land worldwide and the proportion will increase to 50% by 2050 (Otlewska et al .…”

Section: Introductionmentioning

confidence: 99%

Beneficial effects of endophytic Pantoea ananatis with ability to promote rice growth under saline stress

Chang

Han

et al. 2021

J Appl Microbiol

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Aims Soil salinization severely inhibits plant growth, leading to a low crop yield. The aim of the current study was to isolate endophytic bacteria with the ability to promote rice growth under saline conditions. Methods and Results We isolated eight salt‐tolerant endophytic bacteria from rice roots. An isolated strain D1 was selected due to its ability to stimulate rice seed germination in the presence of NaCl, which was identified as Pantoea ananatis D1. It exhibited multiple plant growth‐promoting traits including phosphate solubilization, production of indole‐3‐acetic acid, 1‐aminocyclopropane‐1‐carboxylic acid (ACC) deaminase and siderophore. Inoculation of P. ananatis D1 obviously enhanced the rice root and shoot growth under normal and saline conditions. It also significantly increased the contents of chlorophyll, total soluble protein, and proline in salt‐stressed rice seedlings. Moreover P. ananatis D1 could ameliorate the oxidative stress in rice induced by NaCl and Na2CO3 treatment. The malondialdehyde content and various antioxidant enzyme activities were decreased by P. ananatis D1 inoculation in salt‐affected rice. In addition, P. ananatis D1 showed a positive potential for limiting the Na+ accumulation and enhancing the K+ uptake, leading to an increase of 1·2–1·7 fold in K+/Na+ ratio under saline environment. Conclusions Pantoea ananatis D1 has the ability to improve the salt tolerance of rice seedlings. Significance and Impact of the study The application of plant growth‐promoting bacteria (PGPB) is an eco‐friendly strategy to improve plant tolerance towards abiotic stresses. We demonstrated that P. ananatis D1 could be used as an effective halotolerant PGPB to enhance rice growth in different salt‐affected soils.

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“…Wu et al [ 67 ] reported decreased leaf area, photosynthetic pigments and photosynthetic efficiency under drought stress. Higher salinity in soil affects the survivability of plants by altering chemical, morphological and physiological processes [ 15 ].…”

Section: Endophyte Mediated Drought and Salinity Stress Managementmentioning

confidence: 99%

“…Currently it has been estimated that approx. 20% of the total cultivable land faces saline stress globally and this will reach to 30% by 2050 [ 15 ]. Additionally, low rainfall and high temperatures both play crucial roles in increasing soil salinity, mainly in the arid and semi-arid regions of the world [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

The Potential Application of Endophytes in Management of Stress from Drought and Salinity in Crop Plants

Verma¹,

Kumar

et al. 2021

Microorganisms

106

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Endophytic microorganisms present inside the host plant play an essential role in host fitness, nutrient supply and stress tolerance. Endophytes are often used in sustainable agriculture as biofertilizers, biopesticides and as inoculants to mitigate abiotic stresses including salinity, drought, cold and pH variation in the soil. In changing climatic conditions, abiotic stresses create global challenges to achieve optimum crop yields in agricultural production. Plants experience stress conditions that involve endogenous boosting of their immune system or the overexpression of their defensive redox regulatory systems with increased reactive oxygen species (ROS). However, rising stress factors overwhelm the natural redox protection systems of plants, which leads to massive internal oxidative damage and death. Endophytes are an integral internal partner of hosts and have been shown to mitigate abiotic stresses via modulating local or systemic mechanisms and producing antioxidants to counteract ROS in plants. Advancements in omics and other technologies have been made, but potential application of endophytes remains largely unrealized. In this review article, we will discuss the diversity, population and interaction of endophytes with crop plants as well as potential applications in abiotic stress management.

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When Salt Meddles Between Plant, Soil, and Microorganisms

Cited by 110 publications

References 223 publications

Effects of Abiotic Stress on Soil Microbiome

Effects of Abiotic Stress on Soil Microbiome

Beneficial effects of endophytic Pantoea ananatis with ability to promote rice growth under saline stress

The Potential Application of Endophytes in Management of Stress from Drought and Salinity in Crop Plants

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